Hoisting apparatus.



No. 844,477. PATENTED FEB. 19, 1907.

P. W. SIEURIN.

HOISTING APPARATUS.

APPLICATION FILED JUNE 10.1905.

4 SHEETS-SHEET 1.

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P. W. SIEURIN.

HOISTING APPARATUS.

PATENTED FEB. 19, 1907.

APPLICATION FILED JUNE 10,1905.

4SHEETS-SHEET 2.

M76101 awe y No. 844,477. PATENTED FEB. 19, 1907.

P. W. SIEURIN.

HOISTING APPARATUS.

APPLICATION FILED JUNE 10,1905.

4 SHEETS-SHEET 3.

'7/f6t/wsae6': [/6/6/6l0/ 2" 7 PM H214! ll l/wl/ u AYlGll/fl/t I M/ dlllorrc eg No. 844,477. PATENTED FEB. 19, 1907.

P. W. SIEURIN.

HOISTING APPARATUS.

APPLICATION FILED JUNE 10,1905.

4 SHEETS-SHEET 4.

:view of the hold of a boat, an improved ings and will bemore particularly dumping position in dotted lines.

UNITED STATES,

PAUL WILHELM SI URIN, or GOTHENBURG, SWEDEN.

' HOISTING APPARATUS.

Specification of Letters Patent.

Application filed June 10,1905. Serial No. 264.728-

Patented Feb. 19, 1907.

To all whom it may concern:

.Be it known that 1, PAUL WILHELM SIEU- RIN, sea captain, a subject of the King of Sweden, residing at Gothenburg, Sweden, and whose post-oflice address is Linngatan 51, Gothenburg, Sweden, have invented cer tain new and useful Hoisting Apparatus; and I do declare the following to be a full, clear,

and exact description of the invention, such construction of the bucket and also to an improved means for manipulating the same.

, The invention will be more fully described in connection with the accompanying drawpointed out in the appended claims.

In the drawings, Figure 1 is a transverse bucket, and devices for manipulating the same, the bucket and its operating device being shown in a loading or filling position. Fig. 2 is a like view showing the bucket and its operating device .in a dumping position. Fig. 3 is a side elevation of the improved bucket in aclosed position, showiFng its i s. 4 and 5 are rear views of the bucket. Fig? 6 is a sectional view on line 6 6. of Fig. 5.

Like characters .of reference designate similar parts throughout the different figures of the drawings.

Generally, the invention relates to a form of bucket which is filled by being lowered upon the material and drawn across the surface thereof, the front wall opening to lie flat or parallel with the bottom wall of the bucket and acting in the manner of a drawn scoopshovel.

The invention consists providing a bucket of this character with a dumping bottom wall adapted to open and discharge the contents of the bucket, the scoop and said bottom Wall being normally held in closed positions by a hoist chain or cable with which theyv are connected. According to my invention the bucket is also provided with a dump-chain secured, preferably, to the scoop and to devices for locking the hoist-chain to hold the dumping bottom wall in a closed position. In raising the loaded bucket the hoist-chain closes the scoop and bottom wall and the dump-chain is taken up slack and at a speed equal to the hoist-chain, the weight of the loaded bucket being sustained by the hoist-chain until it is desired to unload, when the weight is shifted from the hoist to the dump chain, the hoist-chain being paid out or slackened to permit the dumping bottom wall to open.

First referring to the specific construction of the bucket the same consists of a structure comprising side walls 1, rear wall 2, a front wall in the form of a scoop 3, and a bottom wall 25, provided with a dumping-section 6,

hinged at 6. The front wall or scoop 3 is provided with end walls 26 and 27, adapted to straddle the side walls 1, the outermost end walls 27 and the side walls 1 being provided with pin-and-slotconnections 28 and 29 to limit movement of the scoop 3 in open and closed positions. The end walls 26 are provided with arms 4, to which the hoist and dump chains are secured in a manner to be I hereinafter more fully described. The rear wall 2 is provided with looking devices adapted to engage and lock the dump-chains, so

that the dumping-wall6 will be normally held in a closed position even when the chains are slack. Said locking devices, as shown, comprise reciprocating locking-bars 12, provided with forked ends 14, the forked ends being preferably equal to the thickness of the chain-links and serving when engaged with the chain to pass beneath the link immediately above the link embraced by the jaw or bifurcated point 14-, as clearly shown in Fig. 6.

The locking movement of the bars 12 is outwardly or toward the side walls 1, and when the chains'are gripped the bifurcated ends 14 engage the side walls 1, completely encircling the chains, thereby precluding the possibility of the chain slipping off from the end of the fork. Said guide-bars 12 are located on the inner side of the end wall 2 and are movable in guides 12. Each bar is provided with pins 13, which project through slots 13 in the wall 2, as clearly shown in Fig. 4. Said bars are so arranged that they are normally held in-a locking position and are unlocked only when the weight of the bucket is shifted from the hoist-chain to the dump-chain, the means for releasing or looking tl1e bars and holding them in a locking posit ion comprisinglevers 11, pivoted on the outer face of the end wall 2. Said levers are provided with lugs 11, which project between the pins 13, engaging the same in shifting the bars 12 from looking to unlockingpositions, and vice versa. Ordinarily the weight of'the lever'll Will normally keep the bars 12 in the position shown in Fig. 4, in Which position the bars 12 are held in a lock ing engagement with the chains. When the levers 11 are raised to the position shown in dotted lines, the bars 12 are shifted to an unlocking position. Said levers 11 are provided with guides 15, which limit their movement in opposite directions.

I will next refer to the hoist and :dump chains and the manner inwhich thesame are connected to the bucket. The hoist-chain .2

,is provided with branches 7 and 8, the former of which .is-connected with arms 4 and the latter of which is connected with .theop posits rear corners of thedump-wall 6. Said,

. oist-chain is operated from the drum 19. "The dump-chain 18, as shown, is connected with the bucket through the medium of a.

','twoart sus ension-rin com risin outer P P and inner members 16 and 17. 'Tl16 dump- I chain 18 is branched near its lower .end and connected With the inner member :17 of said ring, and the outer member 16 isprovided with branch extensions 9 and of the dumpchain, "which are connected, respectively,

with the arms 4 and the levers 11. The dump-chain iso eratedfroma-drum 20, and power is applie to said drums 19 and 20 to operate the same either together or inde-' .pendently of each other." The dump-chain 1 8.and, hoist-chain 2 pass over a'pulley 24, se-

' cured to the swinging beam 23.

In loading, the bucket is .lowered into the 'hold and upon the material, as shown in Fig. 1, and both the :hoist and .dump chains are slack to permit the scoop 3 to open. The

' bottom wall-6 is maintained in aclosed posi- 'tion by the locking-bars 12. A chain 30, which is attached and detached byan operative to the-scoop3, maybe operated in any desired manner to draw the bucket across the surface of the materialand scoop the same therein. As herein'shown, the chain 30 is trained about pulleys 30*? 30 pulley 24, and downwardly therefrom to any suitable oper- -ating-drurn. When the bucket has. been filled, the chain 30 is disconnected, and the dump-chain 18 and the hoist-chain 2 are taken-u by the drums 19 and 20 at equal s eed, t e hoist-chain 2 bein taut and the d iimlpwhain 18 being slack,-w%1ioh'operation resu ts in closing the scoop3 and .ralsing the bucket, as shown at B in i desired to dump, the beam 23 is swung upon its mounting .until the bucket is suspended above the dumping-point, which in the pres-' ent instance consists of a chute 21, at which point the drums 19 and-20 are so operated g. 2. When it is secured to one of said members and branches secured to the other of said memthe hoistechain 2 to the dump-chain 18. This operation serves to hold the bucket in substantially the same position as illustrated in Fig. 3 by means of chains 8 and 9 and the dump-chain 18. However, it will be obvious thatwhen the load is shifted from the hoistchain 2 and 1t s branches 7 and 8 the weight of the bucket w1ll cause-the chains 10 to raise the levers 1 1 and release the gripping-bars 512 .from the chains 8, permitting the bottom wall that the weight of the bucket is shifted from 6 to open, as shown at (J in rig. 2 and indDtted lines in Fig. 3.

Having thus described-my invention, wha I claimis 1 1. An improved bucket of the class described prov ded with a pivotally-mou-nted.

lower wall or bottom and a pivotally-mounted forward lip or nose, a dump-chain secured 'to said nose and bucket, and a hoistechain connected with said lower wall, substantially said lip and locking devices and serving to 1 operate the latter, and a hoist chain having branches secured to said lip and said bottom wall and located in operative relation with respect to said locking devices, substantially as described.

4;.' An improved bucket of the class described provided with a pivotally-mounted lower wall or bottom, a dump-chain secured .to said bucket, a revoluble suspension-ring interposed .insaid chainadjacent the bucket, said ring comprising inner and outer'revoluble members, the chain extending from the bucket being secured to, one member, the re'-:

mainder of thechain extending from the ring being secured to the other member, and .a h0ist-chain passlng through said ring and connected with the lower wall, substantially as described.

. 5. An improvedabucket of the class described provided with a pivotall-y-mounted lower wall .or bottom, a ivotallymounted forward 'nose and chainocking devices, a revoluble suspension-rm comprising inner and outer revoluble mem ers, a dum -.chain avihge bers, said branches being secured to said nose and locking devices, and a hoist-chain pass- 3 ing through said ring and having branches secured to said nose and said lower wall, said last-mentioned branch being in operative relation with said locking devices, substantially as described.

6. An improved bucket of the class described provided With a pivotally-mounted lower wall or bottom, a dump-chain secured to said bucket, means interposed in said chain for permitting the bucket to revolve, and a hoist-chain secured to said lower wall, substantially as described.

7. An improved bucket provided with a bottom Wall adapted to be opened and closed in combination with a hoist-chain connected with and serving to close said wall, a dumpchain, and gripping devices connected with said dump-chain and serving to grip and release said hoist-chain.

8. An improved bucket provided with a movable lip or nose, a bottom wall adapted to be opened and closed, a hoist-chain connected with said movable lip and bottom, grippin devices for said hoist-chain, and a dump-c ain connected with said movable nose and said gripping devices.

9-. An improved bucket provided with a' bottom wall adapted to be opened and closed, hoisting means and dumping means, and mechanism whereby the weight of said bucket may be shifted from one means to the other.

10. .An improved bucket rovided with a bottom wall adapted to e opened and closed, a movable nose or lip, hoisting and dumping means secured to said bucket, lip and bottom wall, and mechanism for shifting the weight of said bucket from one of said means to the other.

11. An improved bucket provided with a bottom wall adapted to be opened and closed, a movable nose or lip, hoisting and dumping means secured to said bottom wall and said nose and bucket, and devices for said chains permitting said bucket to revolve.

In testimony whereof I afiix my signature in presence of two witnesses.

PAUL WILHELM SIEURIN.

Witnesses ERNST NARDLINDLE, HILDUE HAKANsoN. 

